diff options
Diffstat (limited to 'Demos/Device/ClassDriver/MassStorage/Lib')
| -rw-r--r-- | Demos/Device/ClassDriver/MassStorage/Lib/DataflashManager.c | 534 | ||||
| -rw-r--r-- | Demos/Device/ClassDriver/MassStorage/Lib/DataflashManager.h | 89 | ||||
| -rw-r--r-- | Demos/Device/ClassDriver/MassStorage/Lib/SCSI.c | 349 | ||||
| -rw-r--r-- | Demos/Device/ClassDriver/MassStorage/Lib/SCSI.h | 89 |
4 files changed, 1061 insertions, 0 deletions
diff --git a/Demos/Device/ClassDriver/MassStorage/Lib/DataflashManager.c b/Demos/Device/ClassDriver/MassStorage/Lib/DataflashManager.c new file mode 100644 index 0000000000..c0fd16ccc4 --- /dev/null +++ b/Demos/Device/ClassDriver/MassStorage/Lib/DataflashManager.c @@ -0,0 +1,534 @@ +/* + LUFA Library + Copyright (C) Dean Camera, 2017. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com) + + Permission to use, copy, modify, distribute, and sell this + software and its documentation for any purpose is hereby granted + without fee, provided that the above copyright notice appear in + all copies and that both that the copyright notice and this + permission notice and warranty disclaimer appear in supporting + documentation, and that the name of the author not be used in + advertising or publicity pertaining to distribution of the + software without specific, written prior permission. + + The author disclaims all warranties with regard to this + software, including all implied warranties of merchantability + and fitness. In no event shall the author be liable for any + special, indirect or consequential damages or any damages + whatsoever resulting from loss of use, data or profits, whether + in an action of contract, negligence or other tortious action, + arising out of or in connection with the use or performance of + this software. +*/ + +/** \file + * + * Functions to manage the physical Dataflash media, including reading and writing of + * blocks of data. These functions are called by the SCSI layer when data must be stored + * or retrieved to/from the physical storage media. If a different media is used (such + * as a SD card or EEPROM), functions similar to these will need to be generated. + */ + +#define INCLUDE_FROM_DATAFLASHMANAGER_C +#include "DataflashManager.h" + +/** Writes blocks (OS blocks, not Dataflash pages) to the storage medium, the board Dataflash IC(s), from + * the pre-selected data OUT endpoint. This routine reads in OS sized blocks from the endpoint and writes + * them to the Dataflash in Dataflash page sized blocks. + * + * \param[in] MSInterfaceInfo Pointer to a structure containing a Mass Storage Class configuration and state + * \param[in] BlockAddress Data block starting address for the write sequence + * \param[in] TotalBlocks Number of blocks of data to write + */ +void DataflashManager_WriteBlocks(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo, + const uint32_t BlockAddress, + uint16_t TotalBlocks) +{ + uint16_t CurrDFPage = ((BlockAddress * VIRTUAL_MEMORY_BLOCK_SIZE) / DATAFLASH_PAGE_SIZE); + uint16_t CurrDFPageByte = ((BlockAddress * VIRTUAL_MEMORY_BLOCK_SIZE) % DATAFLASH_PAGE_SIZE); + uint8_t CurrDFPageByteDiv16 = (CurrDFPageByte >> 4); + bool UsingSecondBuffer = false; + + /* Select the correct starting Dataflash IC for the block requested */ + Dataflash_SelectChipFromPage(CurrDFPage); + +#if (DATAFLASH_PAGE_SIZE > VIRTUAL_MEMORY_BLOCK_SIZE) + /* Copy selected dataflash's current page contents to the Dataflash buffer */ + Dataflash_SendByte(DF_CMD_MAINMEMTOBUFF1); + Dataflash_SendAddressBytes(CurrDFPage, 0); + Dataflash_WaitWhileBusy(); +#endif + + /* Send the Dataflash buffer write command */ + Dataflash_SendByte(DF_CMD_BUFF1WRITE); + Dataflash_SendAddressBytes(0, CurrDFPageByte); + + /* Wait until endpoint is ready before continuing */ + if (Endpoint_WaitUntilReady()) + return; + + while (TotalBlocks) + { + uint8_t BytesInBlockDiv16 = 0; + + /* Write an endpoint packet sized data block to the Dataflash */ + while (BytesInBlockDiv16 < (VIRTUAL_MEMORY_BLOCK_SIZE >> 4)) + { + /* Check if the endpoint is currently empty */ + if (!(Endpoint_IsReadWriteAllowed())) + { + /* Clear the current endpoint bank */ + Endpoint_ClearOUT(); + + /* Wait until the host has sent another packet */ + if (Endpoint_WaitUntilReady()) + return; + } + + /* Check if end of Dataflash page reached */ + if (CurrDFPageByteDiv16 == (DATAFLASH_PAGE_SIZE >> 4)) + { + /* Write the Dataflash buffer contents back to the Dataflash page */ + Dataflash_WaitWhileBusy(); + Dataflash_SendByte(UsingSecondBuffer ? DF_CMD_BUFF2TOMAINMEMWITHERASE : DF_CMD_BUFF1TOMAINMEMWITHERASE); + Dataflash_SendAddressBytes(CurrDFPage, 0); + + /* Reset the Dataflash buffer counter, increment the page counter */ + CurrDFPageByteDiv16 = 0; + CurrDFPage++; + + /* Once all the Dataflash ICs have had their first buffers filled, switch buffers to maintain throughput */ + if (Dataflash_GetSelectedChip() == DATAFLASH_CHIP_MASK(DATAFLASH_TOTALCHIPS)) + UsingSecondBuffer = !(UsingSecondBuffer); + + /* Select the next Dataflash chip based on the new Dataflash page index */ + Dataflash_SelectChipFromPage(CurrDFPage); + +#if (DATAFLASH_PAGE_SIZE > VIRTUAL_MEMORY_BLOCK_SIZE) + /* If less than one Dataflash page remaining, copy over the existing page to preserve trailing data */ + if ((TotalBlocks * (VIRTUAL_MEMORY_BLOCK_SIZE >> 4)) < (DATAFLASH_PAGE_SIZE >> 4)) + { + /* Copy selected dataflash's current page contents to the Dataflash buffer */ + Dataflash_WaitWhileBusy(); + Dataflash_SendByte(UsingSecondBuffer ? DF_CMD_MAINMEMTOBUFF2 : DF_CMD_MAINMEMTOBUFF1); + Dataflash_SendAddressBytes(CurrDFPage, 0); + Dataflash_WaitWhileBusy(); + } +#endif + + /* Send the Dataflash buffer write command */ + Dataflash_SendByte(UsingSecondBuffer ? DF_CMD_BUFF2WRITE : DF_CMD_BUFF1WRITE); + Dataflash_SendAddressBytes(0, 0); + } + + /* Write one 16-byte chunk of data to the Dataflash */ + Dataflash_SendByte(Endpoint_Read_8()); + Dataflash_SendByte(Endpoint_Read_8()); + Dataflash_SendByte(Endpoint_Read_8()); + Dataflash_SendByte(Endpoint_Read_8()); + Dataflash_SendByte(Endpoint_Read_8()); + Dataflash_SendByte(Endpoint_Read_8()); + Dataflash_SendByte(Endpoint_Read_8()); + Dataflash_SendByte(Endpoint_Read_8()); + Dataflash_SendByte(Endpoint_Read_8()); + Dataflash_SendByte(Endpoint_Read_8()); + Dataflash_SendByte(Endpoint_Read_8()); + Dataflash_SendByte(Endpoint_Read_8()); + Dataflash_SendByte(Endpoint_Read_8()); + Dataflash_SendByte(Endpoint_Read_8()); + Dataflash_SendByte(Endpoint_Read_8()); + Dataflash_SendByte(Endpoint_Read_8()); + + /* Increment the Dataflash page 16 byte block counter */ + CurrDFPageByteDiv16++; + + /* Increment the block 16 byte block counter */ + BytesInBlockDiv16++; + + /* Check if the current command is being aborted by the host */ + if (MSInterfaceInfo->State.IsMassStoreReset) + return; + } + + /* Decrement the blocks remaining counter */ + TotalBlocks--; + } + + /* Write the Dataflash buffer contents back to the Dataflash page */ + Dataflash_WaitWhileBusy(); + Dataflash_SendByte(UsingSecondBuffer ? DF_CMD_BUFF2TOMAINMEMWITHERASE : DF_CMD_BUFF1TOMAINMEMWITHERASE); + Dataflash_SendAddressBytes(CurrDFPage, 0x00); + Dataflash_WaitWhileBusy(); + + /* If the endpoint is empty, clear it ready for the next packet from the host */ + if (!(Endpoint_IsReadWriteAllowed())) + Endpoint_ClearOUT(); + + /* Deselect all Dataflash chips */ + Dataflash_DeselectChip(); +} + +/** Reads blocks (OS blocks, not Dataflash pages) from the storage medium, the board Dataflash IC(s), into + * the pre-selected data IN endpoint. This routine reads in Dataflash page sized blocks from the Dataflash + * and writes them in OS sized blocks to the endpoint. + * + * \param[in] MSInterfaceInfo Pointer to a structure containing a Mass Storage Class configuration and state + * \param[in] BlockAddress Data block starting address for the read sequence + * \param[in] TotalBlocks Number of blocks of data to read + */ +void DataflashManager_ReadBlocks(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo, + const uint32_t BlockAddress, + uint16_t TotalBlocks) +{ + uint16_t CurrDFPage = ((BlockAddress * VIRTUAL_MEMORY_BLOCK_SIZE) / DATAFLASH_PAGE_SIZE); + uint16_t CurrDFPageByte = ((BlockAddress * VIRTUAL_MEMORY_BLOCK_SIZE) % DATAFLASH_PAGE_SIZE); + uint8_t CurrDFPageByteDiv16 = (CurrDFPageByte >> 4); + + /* Select the correct starting Dataflash IC for the block requested */ + Dataflash_SelectChipFromPage(CurrDFPage); + + /* Send the Dataflash main memory page read command */ + Dataflash_SendByte(DF_CMD_MAINMEMPAGEREAD); + Dataflash_SendAddressBytes(CurrDFPage, CurrDFPageByte); + Dataflash_SendByte(0x00); + Dataflash_SendByte(0x00); + Dataflash_SendByte(0x00); + Dataflash_SendByte(0x00); + + /* Wait until endpoint is ready before continuing */ + if (Endpoint_WaitUntilReady()) + return; + + while (TotalBlocks) + { + uint8_t BytesInBlockDiv16 = 0; + + /* Read an endpoint packet sized data block from the Dataflash */ + while (BytesInBlockDiv16 < (VIRTUAL_MEMORY_BLOCK_SIZE >> 4)) + { + /* Check if the endpoint is currently full */ + if (!(Endpoint_IsReadWriteAllowed())) + { + /* Clear the endpoint bank to send its contents to the host */ + Endpoint_ClearIN(); + + /* Wait until the endpoint is ready for more data */ + if (Endpoint_WaitUntilReady()) + return; + } + + /* Check if end of Dataflash page reached */ + if (CurrDFPageByteDiv16 == (DATAFLASH_PAGE_SIZE >> 4)) + { + /* Reset the Dataflash buffer counter, increment the page counter */ + CurrDFPageByteDiv16 = 0; + CurrDFPage++; + + /* Select the next Dataflash chip based on the new Dataflash page index */ + Dataflash_SelectChipFromPage(CurrDFPage); + + /* Send the Dataflash main memory page read command */ + Dataflash_SendByte(DF_CMD_MAINMEMPAGEREAD); + Dataflash_SendAddressBytes(CurrDFPage, 0); + Dataflash_SendByte(0x00); + Dataflash_SendByte(0x00); + Dataflash_SendByte(0x00); + Dataflash_SendByte(0x00); + } + + /* Read one 16-byte chunk of data from the Dataflash */ + Endpoint_Write_8(Dataflash_ReceiveByte()); + Endpoint_Write_8(Dataflash_ReceiveByte()); + Endpoint_Write_8(Dataflash_ReceiveByte()); + Endpoint_Write_8(Dataflash_ReceiveByte()); + Endpoint_Write_8(Dataflash_ReceiveByte()); + Endpoint_Write_8(Dataflash_ReceiveByte()); + Endpoint_Write_8(Dataflash_ReceiveByte()); + Endpoint_Write_8(Dataflash_ReceiveByte()); + Endpoint_Write_8(Dataflash_ReceiveByte()); + Endpoint_Write_8(Dataflash_ReceiveByte()); + Endpoint_Write_8(Dataflash_ReceiveByte()); + Endpoint_Write_8(Dataflash_ReceiveByte()); + Endpoint_Write_8(Dataflash_ReceiveByte()); + Endpoint_Write_8(Dataflash_ReceiveByte()); + Endpoint_Write_8(Dataflash_ReceiveByte()); + Endpoint_Write_8(Dataflash_ReceiveByte()); + + /* Increment the Dataflash page 16 byte block counter */ + CurrDFPageByteDiv16++; + + /* Increment the block 16 byte block counter */ + BytesInBlockDiv16++; + + /* Check if the current command is being aborted by the host */ + if (MSInterfaceInfo->State.IsMassStoreReset) + return; + } + + /* Decrement the blocks remaining counter */ + TotalBlocks--; + } + + /* If the endpoint is full, send its contents to the host */ + if (!(Endpoint_IsReadWriteAllowed())) + Endpoint_ClearIN(); + + /* Deselect all Dataflash chips */ + Dataflash_DeselectChip(); +} + +/** Writes blocks (OS blocks, not Dataflash pages) to the storage medium, the board Dataflash IC(s), from + * the given RAM buffer. This routine reads in OS sized blocks from the buffer and writes them to the + * Dataflash in Dataflash page sized blocks. This can be linked to FAT libraries to write files to the + * Dataflash. + * + * \param[in] BlockAddress Data block starting address for the write sequence + * \param[in] TotalBlocks Number of blocks of data to write + * \param[in] BufferPtr Pointer to the data source RAM buffer + */ +void DataflashManager_WriteBlocks_RAM(const uint32_t BlockAddress, + uint16_t TotalBlocks, + uint8_t* BufferPtr) +{ + uint16_t CurrDFPage = ((BlockAddress * VIRTUAL_MEMORY_BLOCK_SIZE) / DATAFLASH_PAGE_SIZE); + uint16_t CurrDFPageByte = ((BlockAddress * VIRTUAL_MEMORY_BLOCK_SIZE) % DATAFLASH_PAGE_SIZE); + uint8_t CurrDFPageByteDiv16 = (CurrDFPageByte >> 4); + bool UsingSecondBuffer = false; + + /* Select the correct starting Dataflash IC for the block requested */ + Dataflash_SelectChipFromPage(CurrDFPage); + +#if (DATAFLASH_PAGE_SIZE > VIRTUAL_MEMORY_BLOCK_SIZE) + /* Copy selected dataflash's current page contents to the Dataflash buffer */ + Dataflash_SendByte(DF_CMD_MAINMEMTOBUFF1); + Dataflash_SendAddressBytes(CurrDFPage, 0); + Dataflash_WaitWhileBusy(); +#endif + + /* Send the Dataflash buffer write command */ + Dataflash_SendByte(DF_CMD_BUFF1WRITE); + Dataflash_SendAddressBytes(0, CurrDFPageByte); + + while (TotalBlocks) + { + uint8_t BytesInBlockDiv16 = 0; + + /* Write an endpoint packet sized data block to the Dataflash */ + while (BytesInBlockDiv16 < (VIRTUAL_MEMORY_BLOCK_SIZE >> 4)) + { + /* Check if end of Dataflash page reached */ + if (CurrDFPageByteDiv16 == (DATAFLASH_PAGE_SIZE >> 4)) + { + /* Write the Dataflash buffer contents back to the Dataflash page */ + Dataflash_WaitWhileBusy(); + Dataflash_SendByte(UsingSecondBuffer ? DF_CMD_BUFF2TOMAINMEMWITHERASE : DF_CMD_BUFF1TOMAINMEMWITHERASE); + Dataflash_SendAddressBytes(CurrDFPage, 0); + + /* Reset the Dataflash buffer counter, increment the page counter */ + CurrDFPageByteDiv16 = 0; + CurrDFPage++; + + /* Once all the Dataflash ICs have had their first buffers filled, switch buffers to maintain throughput */ + if (Dataflash_GetSelectedChip() == DATAFLASH_CHIP_MASK(DATAFLASH_TOTALCHIPS)) + UsingSecondBuffer = !(UsingSecondBuffer); + + /* Select the next Dataflash chip based on the new Dataflash page index */ + Dataflash_SelectChipFromPage(CurrDFPage); + +#if (DATAFLASH_PAGE_SIZE > VIRTUAL_MEMORY_BLOCK_SIZE) + /* If less than one Dataflash page remaining, copy over the existing page to preserve trailing data */ + if ((TotalBlocks * (VIRTUAL_MEMORY_BLOCK_SIZE >> 4)) < (DATAFLASH_PAGE_SIZE >> 4)) + { + /* Copy selected dataflash's current page contents to the Dataflash buffer */ + Dataflash_WaitWhileBusy(); + Dataflash_SendByte(UsingSecondBuffer ? DF_CMD_MAINMEMTOBUFF2 : DF_CMD_MAINMEMTOBUFF1); + Dataflash_SendAddressBytes(CurrDFPage, 0); + Dataflash_WaitWhileBusy(); + } +#endif + + /* Send the Dataflash buffer write command */ + Dataflash_ToggleSelectedChipCS(); + Dataflash_SendByte(UsingSecondBuffer ? DF_CMD_BUFF2WRITE : DF_CMD_BUFF1WRITE); + Dataflash_SendAddressBytes(0, 0); + } + + /* Write one 16-byte chunk of data to the Dataflash */ + for (uint8_t ByteNum = 0; ByteNum < 16; ByteNum++) + Dataflash_SendByte(*(BufferPtr++)); + + /* Increment the Dataflash page 16 byte block counter */ + CurrDFPageByteDiv16++; + + /* Increment the block 16 byte block counter */ + BytesInBlockDiv16++; + } + + /* Decrement the blocks remaining counter */ + TotalBlocks--; + } + + /* Write the Dataflash buffer contents back to the Dataflash page */ + Dataflash_WaitWhileBusy(); + Dataflash_SendByte(UsingSecondBuffer ? DF_CMD_BUFF2TOMAINMEMWITHERASE : DF_CMD_BUFF1TOMAINMEMWITHERASE); + Dataflash_SendAddressBytes(CurrDFPage, 0x00); + Dataflash_WaitWhileBusy(); + + /* Deselect all Dataflash chips */ + Dataflash_DeselectChip(); +} + +/** Reads blocks (OS blocks, not Dataflash pages) from the storage medium, the board Dataflash IC(s), into + * the preallocated RAM buffer. This routine reads in Dataflash page sized blocks from the Dataflash + * and writes them in OS sized blocks to the given buffer. This can be linked to FAT libraries to read + * the files stored on the Dataflash. + * + * \param[in] BlockAddress Data block starting address for the read sequence + * \param[in] TotalBlocks Number of blocks of data to read + * \param[out] BufferPtr Pointer to the data destination RAM buffer + */ +void DataflashManager_ReadBlocks_RAM(const uint32_t BlockAddress, + uint16_t TotalBlocks, + uint8_t* BufferPtr) +{ + uint16_t CurrDFPage = ((BlockAddress * VIRTUAL_MEMORY_BLOCK_SIZE) / DATAFLASH_PAGE_SIZE); + uint16_t CurrDFPageByte = ((BlockAddress * VIRTUAL_MEMORY_BLOCK_SIZE) % DATAFLASH_PAGE_SIZE); + uint8_t CurrDFPageByteDiv16 = (CurrDFPageByte >> 4); + + /* Select the correct starting Dataflash IC for the block requested */ + Dataflash_SelectChipFromPage(CurrDFPage); + + /* Send the Dataflash main memory page read command */ + Dataflash_SendByte(DF_CMD_MAINMEMPAGEREAD); + Dataflash_SendAddressBytes(CurrDFPage, CurrDFPageByte); + Dataflash_SendByte(0x00); + Dataflash_SendByte(0x00); + Dataflash_SendByte(0x00); + Dataflash_SendByte(0x00); + + while (TotalBlocks) + { + uint8_t BytesInBlockDiv16 = 0; + + /* Read an endpoint packet sized data block from the Dataflash */ + while (BytesInBlockDiv16 < (VIRTUAL_MEMORY_BLOCK_SIZE >> 4)) + { + /* Check if end of Dataflash page reached */ + if (CurrDFPageByteDiv16 == (DATAFLASH_PAGE_SIZE >> 4)) + { + /* Reset the Dataflash buffer counter, increment the page counter */ + CurrDFPageByteDiv16 = 0; + CurrDFPage++; + + /* Select the next Dataflash chip based on the new Dataflash page index */ + Dataflash_SelectChipFromPage(CurrDFPage); + + /* Send the Dataflash main memory page read command */ + Dataflash_SendByte(DF_CMD_MAINMEMPAGEREAD); + Dataflash_SendAddressBytes(CurrDFPage, 0); + Dataflash_SendByte(0x00); + Dataflash_SendByte(0x00); + Dataflash_SendByte(0x00); + Dataflash_SendByte(0x00); + } + + /* Read one 16-byte chunk of data from the Dataflash */ + for (uint8_t ByteNum = 0; ByteNum < 16; ByteNum++) + *(BufferPtr++) = Dataflash_ReceiveByte(); + + /* Increment the Dataflash page 16 byte block counter */ + CurrDFPageByteDiv16++; + + /* Increment the block 16 byte block counter */ + BytesInBlockDiv16++; + } + + /* Decrement the blocks remaining counter */ + TotalBlocks--; + } + + /* Deselect all Dataflash chips */ + Dataflash_DeselectChip(); +} + +/** Disables the Dataflash memory write protection bits on the board Dataflash ICs, if enabled. */ +void DataflashManager_ResetDataflashProtections(void) +{ + /* Select first Dataflash chip, send the read status register command */ + Dataflash_SelectChip(DATAFLASH_CHIP1); + Dataflash_SendByte(DF_CMD_GETSTATUS); + + /* Check if sector protection is enabled */ + if (Dataflash_ReceiveByte() & DF_STATUS_SECTORPROTECTION_ON) + { + Dataflash_ToggleSelectedChipCS(); + + /* Send the commands to disable sector protection */ + Dataflash_SendByte(DF_CMD_SECTORPROTECTIONOFF[0]); + Dataflash_SendByte(DF_CMD_SECTORPROTECTIONOFF[1]); + Dataflash_SendByte(DF_CMD_SECTORPROTECTIONOFF[2]); + Dataflash_SendByte(DF_CMD_SECTORPROTECTIONOFF[3]); + } + + /* Select second Dataflash chip (if present on selected board), send read status register command */ + #if (DATAFLASH_TOTALCHIPS == 2) + Dataflash_SelectChip(DATAFLASH_CHIP2); + Dataflash_SendByte(DF_CMD_GETSTATUS); + + /* Check if sector protection is enabled */ + if (Dataflash_ReceiveByte() & DF_STATUS_SECTORPROTECTION_ON) + { + Dataflash_ToggleSelectedChipCS(); + + /* Send the commands to disable sector protection */ + Dataflash_SendByte(DF_CMD_SECTORPROTECTIONOFF[0]); + Dataflash_SendByte(DF_CMD_SECTORPROTECTIONOFF[1]); + Dataflash_SendByte(DF_CMD_SECTORPROTECTIONOFF[2]); + Dataflash_SendByte(DF_CMD_SECTORPROTECTIONOFF[3]); + } + #endif + + /* Deselect current Dataflash chip */ + Dataflash_DeselectChip(); +} + +/** Performs a simple test on the attached Dataflash IC(s) to ensure that they are working. + * + * \return Boolean \c true if all media chips are working, \c false otherwise + */ +bool DataflashManager_CheckDataflashOperation(void) +{ + uint8_t ReturnByte; + + /* Test first Dataflash IC is present and responding to commands */ + Dataflash_SelectChip(DATAFLASH_CHIP1); + Dataflash_SendByte(DF_CMD_READMANUFACTURERDEVICEINFO); + ReturnByte = Dataflash_ReceiveByte(); + Dataflash_DeselectChip(); + + /* If returned data is invalid, fail the command */ + if (ReturnByte != DF_MANUFACTURER_ATMEL) + return false; + + #if (DATAFLASH_TOTALCHIPS == 2) + /* Test second Dataflash IC is present and responding to commands */ + Dataflash_SelectChip(DATAFLASH_CHIP2); + Dataflash_SendByte(DF_CMD_READMANUFACTURERDEVICEINFO); + ReturnByte = Dataflash_ReceiveByte(); + Dataflash_DeselectChip(); + + /* If returned data is invalid, fail the command */ + if (ReturnByte != DF_MANUFACTURER_ATMEL) + return false; + #endif + + return true; +} + diff --git a/Demos/Device/ClassDriver/MassStorage/Lib/DataflashManager.h b/Demos/Device/ClassDriver/MassStorage/Lib/DataflashManager.h new file mode 100644 index 0000000000..b33f3f46d1 --- /dev/null +++ b/Demos/Device/ClassDriver/MassStorage/Lib/DataflashManager.h @@ -0,0 +1,89 @@ +/* + LUFA Library + Copyright (C) Dean Camera, 2017. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com) + + Permission to use, copy, modify, distribute, and sell this + software and its documentation for any purpose is hereby granted + without fee, provided that the above copyright notice appear in + all copies and that both that the copyright notice and this + permission notice and warranty disclaimer appear in supporting + documentation, and that the name of the author not be used in + advertising or publicity pertaining to distribution of the + software without specific, written prior permission. + + The author disclaims all warranties with regard to this + software, including all implied warranties of merchantability + and fitness. In no event shall the author be liable for any + special, indirect or consequential damages or any damages + whatsoever resulting from loss of use, data or profits, whether + in an action of contract, negligence or other tortious action, + arising out of or in connection with the use or performance of + this software. +*/ + +/** \file + * + * Header file for DataflashManager.c. + */ + +#ifndef _DATAFLASH_MANAGER_H_ +#define _DATAFLASH_MANAGER_H_ + + /* Includes: */ + #include <avr/io.h> + + #include "../MassStorage.h" + #include "../Descriptors.h" + #include "Config/AppConfig.h" + + #include <LUFA/Common/Common.h> + #include <LUFA/Drivers/USB/USB.h> + #include <LUFA/Drivers/Board/Dataflash.h> + + /* Preprocessor Checks: */ + #if (DATAFLASH_PAGE_SIZE % 16) + #error Dataflash page size must be a multiple of 16 bytes. + #endif + + /* Defines: */ + /** Total number of bytes of the storage medium, comprised of one or more Dataflash ICs. */ + #define VIRTUAL_MEMORY_BYTES ((uint32_t)DATAFLASH_PAGES * DATAFLASH_PAGE_SIZE * DATAFLASH_TOTALCHIPS) + + /** Block size of the device. This is kept at 512 to remain compatible with the OS despite the underlying + * storage media (Dataflash) using a different native block size. Do not change this value. + */ + #define VIRTUAL_MEMORY_BLOCK_SIZE 512 + + /** Total number of blocks of the virtual memory for reporting to the host as the device's total capacity. Do not + * change this value; change VIRTUAL_MEMORY_BYTES instead to alter the media size. + */ + #define VIRTUAL_MEMORY_BLOCKS (VIRTUAL_MEMORY_BYTES / VIRTUAL_MEMORY_BLOCK_SIZE) + + /** Blocks in each LUN, calculated from the total capacity divided by the total number of Logical Units in the device. */ + #define LUN_MEDIA_BLOCKS (VIRTUAL_MEMORY_BLOCKS / TOTAL_LUNS) + + /* Function Prototypes: */ + void DataflashManager_WriteBlocks(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo, + const uint32_t BlockAddress, + uint16_t TotalBlocks); + void DataflashManager_ReadBlocks(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo, + const uint32_t BlockAddress, + uint16_t TotalBlocks); + void DataflashManager_WriteBlocks_RAM(const uint32_t BlockAddress, + uint16_t TotalBlocks, + uint8_t* BufferPtr) ATTR_NON_NULL_PTR_ARG(3); + void DataflashManager_ReadBlocks_RAM(const uint32_t BlockAddress, + uint16_t TotalBlocks, + uint8_t* BufferPtr) ATTR_NON_NULL_PTR_ARG(3); + void DataflashManager_ResetDataflashProtections(void); + bool DataflashManager_CheckDataflashOperation(void); + +#endif + diff --git a/Demos/Device/ClassDriver/MassStorage/Lib/SCSI.c b/Demos/Device/ClassDriver/MassStorage/Lib/SCSI.c new file mode 100644 index 0000000000..8780d1603d --- /dev/null +++ b/Demos/Device/ClassDriver/MassStorage/Lib/SCSI.c @@ -0,0 +1,349 @@ +/* + LUFA Library + Copyright (C) Dean Camera, 2017. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com) + + Permission to use, copy, modify, distribute, and sell this + software and its documentation for any purpose is hereby granted + without fee, provided that the above copyright notice appear in + all copies and that both that the copyright notice and this + permission notice and warranty disclaimer appear in supporting + documentation, and that the name of the author not be used in + advertising or publicity pertaining to distribution of the + software without specific, written prior permission. + + The author disclaims all warranties with regard to this + software, including all implied warranties of merchantability + and fitness. In no event shall the author be liable for any + special, indirect or consequential damages or any damages + whatsoever resulting from loss of use, data or profits, whether + in an action of contract, negligence or other tortious action, + arising out of or in connection with the use or performance of + this software. +*/ + +/** \file + * + * SCSI command processing routines, for SCSI commands issued by the host. Mass Storage + * devices use a thin "Bulk-Only Transport" protocol for issuing commands and status information, + * which wrap around standard SCSI device commands for controlling the actual storage medium. + */ + +#define INCLUDE_FROM_SCSI_C +#include "SCSI.h" + +/** Structure to hold the SCSI response data to a SCSI INQUIRY command. This gives information about the device's + * features and capabilities. + */ +static const SCSI_Inquiry_Response_t InquiryData = + { + .DeviceType = DEVICE_TYPE_BLOCK, + .PeripheralQualifier = 0, + + .Removable = true, + + .Version = 0, + + .ResponseDataFormat = 2, + .NormACA = false, + .TrmTsk = false, + .AERC = false, + + .AdditionalLength = 0x1F, + + .SoftReset = false, + .CmdQue = false, + .Linked = false, + .Sync = false, + .WideBus16Bit = false, + .WideBus32Bit = false, + .RelAddr = false, + + .VendorID = "LUFA", + .ProductID = "Dataflash Disk", + .RevisionID = {'0','.','0','0'}, + }; + +/** Structure to hold the sense data for the last issued SCSI command, which is returned to the host after a SCSI REQUEST SENSE + * command is issued. This gives information on exactly why the last command failed to complete. + */ +static SCSI_Request_Sense_Response_t SenseData = + { + .ResponseCode = 0x70, + .AdditionalLength = 0x0A, + }; + + +/** Main routine to process the SCSI command located in the Command Block Wrapper read from the host. This dispatches + * to the appropriate SCSI command handling routine if the issued command is supported by the device, else it returns + * a command failure due to a ILLEGAL REQUEST. + * + * \param[in] MSInterfaceInfo Pointer to the Mass Storage class interface structure that the command is associated with + * + * \return Boolean \c true if the command completed successfully, \c false otherwise + */ +bool SCSI_DecodeSCSICommand(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo) +{ + bool CommandSuccess = false; + + /* Run the appropriate SCSI command hander function based on the passed command */ + switch (MSInterfaceInfo->State.CommandBlock.SCSICommandData[0]) + { + case SCSI_CMD_INQUIRY: + CommandSuccess = SCSI_Command_Inquiry(MSInterfaceInfo); + break; + case SCSI_CMD_REQUEST_SENSE: + CommandSuccess = SCSI_Command_Request_Sense(MSInterfaceInfo); + break; + case SCSI_CMD_READ_CAPACITY_10: + CommandSuccess = SCSI_Command_Read_Capacity_10(MSInterfaceInfo); + break; + case SCSI_CMD_SEND_DIAGNOSTIC: + CommandSuccess = SCSI_Command_Send_Diagnostic(MSInterfaceInfo); + break; + case SCSI_CMD_WRITE_10: + CommandSuccess = SCSI_Command_ReadWrite_10(MSInterfaceInfo, DATA_WRITE); + break; + case SCSI_CMD_READ_10: + CommandSuccess = SCSI_Command_ReadWrite_10(MSInterfaceInfo, DATA_READ); + break; + case SCSI_CMD_MODE_SENSE_6: + CommandSuccess = SCSI_Command_ModeSense_6(MSInterfaceInfo); + break; + case SCSI_CMD_START_STOP_UNIT: + case SCSI_CMD_TEST_UNIT_READY: + case SCSI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL: + case SCSI_CMD_VERIFY_10: + /* These commands should just succeed, no handling required */ + CommandSuccess = true; + MSInterfaceInfo->State.CommandBlock.DataTransferLength = 0; + break; + default: + /* Update the SENSE key to reflect the invalid command */ + SCSI_SET_SENSE(SCSI_SENSE_KEY_ILLEGAL_REQUEST, + SCSI_ASENSE_INVALID_COMMAND, + SCSI_ASENSEQ_NO_QUALIFIER); + break; + } + + /* Check if command was successfully processed */ + if (CommandSuccess) + { + SCSI_SET_SENSE(SCSI_SENSE_KEY_GOOD, + SCSI_ASENSE_NO_ADDITIONAL_INFORMATION, + SCSI_ASENSEQ_NO_QUALIFIER); + + return true; + } + + return false; +} + +/** Command processing for an issued SCSI INQUIRY command. This command returns information about the device's features + * and capabilities to the host. + * + * \param[in] MSInterfaceInfo Pointer to the Mass Storage class interface structure that the command is associated with + * + * \return Boolean \c true if the command completed successfully, \c false otherwise. + */ +static bool SCSI_Command_Inquiry(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo) +{ + uint16_t AllocationLength = SwapEndian_16(*(uint16_t*)&MSInterfaceInfo->State.CommandBlock.SCSICommandData[3]); + uint16_t BytesTransferred = MIN(AllocationLength, sizeof(InquiryData)); + + /* Only the standard INQUIRY data is supported, check if any optional INQUIRY bits set */ + if ((MSInterfaceInfo->State.CommandBlock.SCSICommandData[1] & ((1 << 0) | (1 << 1))) || + MSInterfaceInfo->State.CommandBlock.SCSICommandData[2]) + { + /* Optional but unsupported bits set - update the SENSE key and fail the request */ + SCSI_SET_SENSE(SCSI_SENSE_KEY_ILLEGAL_REQUEST, + SCSI_ASENSE_INVALID_FIELD_IN_CDB, + SCSI_ASENSEQ_NO_QUALIFIER); + + return false; + } + + Endpoint_Write_Stream_LE(&InquiryData, BytesTransferred, NULL); + + /* Pad out remaining bytes with 0x00 */ + Endpoint_Null_Stream((AllocationLength - BytesTransferred), NULL); + + /* Finalize the stream transfer to send the last packet */ + Endpoint_ClearIN(); + + /* Succeed the command and update the bytes transferred counter */ + MSInterfaceInfo->State.CommandBlock.DataTransferLength -= BytesTransferred; + + return true; +} + +/** Command processing for an issued SCSI REQUEST SENSE command. This command returns information about the last issued command, + * including the error code and additional error information so that the host can determine why a command failed to complete. + * + * \param[in] MSInterfaceInfo Pointer to the Mass Storage class interface structure that the command is associated with + * + * \return Boolean \c true if the command completed successfully, \c false otherwise. + */ +static bool SCSI_Command_Request_Sense(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo) +{ + uint8_t AllocationLength = MSInterfaceInfo->State.CommandBlock.SCSICommandData[4]; + uint8_t BytesTransferred = MIN(AllocationLength, sizeof(SenseData)); + + Endpoint_Write_Stream_LE(&SenseData, BytesTransferred, NULL); + Endpoint_Null_Stream((AllocationLength - BytesTransferred), NULL); + Endpoint_ClearIN(); + + /* Succeed the command and update the bytes transferred counter */ + MSInterfaceInfo->State.CommandBlock.DataTransferLength -= BytesTransferred; + + return true; +} + +/** Command processing for an issued SCSI READ CAPACITY (10) command. This command returns information about the device's capacity + * on the selected Logical Unit (drive), as a number of OS-sized blocks. + * + * \param[in] MSInterfaceInfo Pointer to the Mass Storage class interface structure that the command is associated with + * + * \return Boolean \c true if the command completed successfully, \c false otherwise. + */ +static bool SCSI_Command_Read_Capacity_10(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo) +{ + uint32_t LastBlockAddressInLUN = (LUN_MEDIA_BLOCKS - 1); + uint32_t MediaBlockSize = VIRTUAL_MEMORY_BLOCK_SIZE; + + Endpoint_Write_Stream_BE(&LastBlockAddressInLUN, sizeof(LastBlockAddressInLUN), NULL); + Endpoint_Write_Stream_BE(&MediaBlockSize, sizeof(MediaBlockSize), NULL); + Endpoint_ClearIN(); + + /* Succeed the command and update the bytes transferred counter */ + MSInterfaceInfo->State.CommandBlock.DataTransferLength -= 8; + + return true; +} + +/** Command processing for an issued SCSI SEND DIAGNOSTIC command. This command performs a quick check of the Dataflash ICs on the + * board, and indicates if they are present and functioning correctly. Only the Self-Test portion of the diagnostic command is + * supported. + * + * \param[in] MSInterfaceInfo Pointer to the Mass Storage class interface structure that the command is associated with + * + * \return Boolean \c true if the command completed successfully, \c false otherwise. + */ +static bool SCSI_Command_Send_Diagnostic(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo) +{ + /* Check to see if the SELF TEST bit is not set */ + if (!(MSInterfaceInfo->State.CommandBlock.SCSICommandData[1] & (1 << 2))) + { + /* Only self-test supported - update SENSE key and fail the command */ + SCSI_SET_SENSE(SCSI_SENSE_KEY_ILLEGAL_REQUEST, + SCSI_ASENSE_INVALID_FIELD_IN_CDB, + SCSI_ASENSEQ_NO_QUALIFIER); + + return false; + } + + /* Check to see if all attached Dataflash ICs are functional */ + if (!(DataflashManager_CheckDataflashOperation())) + { + /* Update SENSE key with a hardware error condition and return command fail */ + SCSI_SET_SENSE(SCSI_SENSE_KEY_HARDWARE_ERROR, + SCSI_ASENSE_NO_ADDITIONAL_INFORMATION, + SCSI_ASENSEQ_NO_QUALIFIER); + + return false; + } + + /* Succeed the command and update the bytes transferred counter */ + MSInterfaceInfo->State.CommandBlock.DataTransferLength = 0; + + return true; +} + +/** Command processing for an issued SCSI READ (10) or WRITE (10) command. This command reads in the block start address + * and total number of blocks to process, then calls the appropriate low-level Dataflash routine to handle the actual + * reading and writing of the data. + * + * \param[in] MSInterfaceInfo Pointer to the Mass Storage class interface structure that the command is associated with + * \param[in] IsDataRead Indicates if the command is a READ (10) command or WRITE (10) command (DATA_READ or DATA_WRITE) + * + * \return Boolean \c true if the command completed successfully, \c false otherwise. + */ +static bool SCSI_Command_ReadWrite_10(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo, + const bool IsDataRead) +{ + uint32_t BlockAddress; + uint16_t TotalBlocks; + + /* Check if the disk is write protected or not */ + if ((IsDataRead == DATA_WRITE) && DISK_READ_ONLY) + { + /* Block address is invalid, update SENSE key and return command fail */ + SCSI_SET_SENSE(SCSI_SENSE_KEY_DATA_PROTECT, + SCSI_ASENSE_WRITE_PROTECTED, + SCSI_ASENSEQ_NO_QUALIFIER); + + return false; + } + + /* Load in the 32-bit block address (SCSI uses big-endian, so have to reverse the byte order) */ + BlockAddress = SwapEndian_32(*(uint32_t*)&MSInterfaceInfo->State.CommandBlock.SCSICommandData[2]); + + /* Load in the 16-bit total blocks (SCSI uses big-endian, so have to reverse the byte order) */ + TotalBlocks = SwapEndian_16(*(uint16_t*)&MSInterfaceInfo->State.CommandBlock.SCSICommandData[7]); + + /* Check if the block address is outside the maximum allowable value for the LUN */ + if (BlockAdd |